“I’m from Liverpool and they abbreviate everything in Liverpool,” McCartney explains. “McCartney is a bit too formal for ‘Hey, Macca.’ So, George Harrison, ‘Hey, Hassa.’ John Lennon, ‘Lenny.’ So, they just abbreviate everything there and so that’s why. It’s a derivation of McCartney.”
Another relief! It’s not a derivation from the dance name. I never did see him do it.
Doesn't that just make you wonder if "Michelle" is better known as "Mike"?
Thanks, I always wondered where Macca came from too.